Reuters reports that "Russian Defense Minister Sergei Shoigu accused the United States on Thursday of working on military "scenarios" near Russia's borders that he said were a source of grave concern."

"Interfax news agency quoted Shoigu as expressing surprise at a speech on Wednesday in which U.S. Defense Secretary Chuck Hagel said U.S. armed forces 'must deal with a revisionist Russia - with its modern and capable Army - on NATO's doorstep.'"

"Russia's relations with the West have reached a post-Cold War low over the conflict in Ukraine, with Moscow denying accusations that it has supplied weapons and troops to back pro-Russian separatists in the east of the former Soviet republic."